Application of amplitude thresholding to aid minimum energy adaptive subtraction for multiple attenuation
MetadataShow full item record
Model based multiple prediction approaches require an adaptive subtraction step that is able to correct for differences between the real and predicted multiples. The commonly used subtraction process derives shaping operators, in the least squares sense, to minimize the energy difference between the predicted multiples and the field record. Although the minimum energy assumption allows a computationally efficient adaptive subtraction, it can lead to attenuation of primary information. This abstract illustrates how a simple amplitude clipping approach can significantly improve the effectiveness of the least squares adaptive subtraction and minimize primary attenuation.
Published by the Society of Exploration Geophysicists.
Copyright © 2008 Society of Exploration Geophysicists.
The link to the journal’s home page is: http://segdl.org/geophysics
Showing items related by title, author, creator and subject.
Kühnapfel, Thorsten (2009)For humans, hearing is the second most important sense, after sight. Therefore, acoustic information greatly contributes to observing and analysing an area of interest. For this reason combining audio and video cues for ...
Nadri, D.; Urosevic, Milovan; Wilkes, P.; Asgharzadeh, Mehdi (2012)This paper presents a processing workflow to attenuate the strong tube waves from VSP surveys acquired in Perth, Western Australia. An array of 24 hydrophones spaced at 10 metre intervals is attached to a cable run down ...
Kϋhnapfel, Thorsten; Tan, Tele; Venkatesh, Svetha; Igel, B.; Nordholm, Sven (2008)We present a new approach for speech enhancement in the presence of non-stationary and rapidly changing background noise. A distributed microphone system is used to capture the acoustic characteristics of the environment. ...